Method for production of beryllium copper alloys



Patented Mtg. 7,1939

* UNITEDUZSTATES" I PATENT OFFICE METHOD FOR PRODUCTION or BERYLLIUM' comma ALLOYS Herbert 'Gruber, ,Hanan-on-the-Main, Germany, assignor to Heraeus-Vacuumschmelze, A. G., liianau-on-the-Main, Germany 4 No Drawing". Application June 23, 1937, Serial No. 149,837. In Germany June 24, 1936 4 Claims.

pense with the previously molten copper bath entirely if desired, 1

Similarly, one need not operate with a rarefied chamber or a hydrogen atmosphere, but may proseed in air in a closed crucible.

A I mix finely divided beryllium oxide or beryliium orecontaim'ng beryllium oxide, copper and carbon and bring the temperature up to about 2000 C. to 2300 C.

1 If desired, fluxes such as lime or calcium carbide maybe used, although'theyare not necessary. The carbon may also be added in the form of its compounds, for instance, beryllium carbide. The copper may also be in the, form of copper oxide. .Il may also produce other alloys of nickel,

5 suchas beryllium nickel or beryllium-iron, in the- 25 same way, in which case I use an oxide of the metal tube alloyed with beryllium; It is also possible for me to operate as low' as about 1900" C. Here, however, I prefer, during the cooling period, to add known fluxes to the 30 solidifying mixture preierably halogen comto a reaction temperature of from about 2000 C.

pounds of alkali metals or earth alkali metals, these additions taking place at a temperature of between 1100 C. and 1800" C.. and preferably between 1450" C. and 1550 C.

3 claim: V q

l, The process of producing beryllium copper alloys which comprises supplying a mixture of finely divided beryllium oxide, copper and carbon, to reaction temperature of from' about'1900 C. to 2300 C. t

2. The process of producing beryllium copper alloys which comprises supplying a mixture of finely divided beryllium oxide, copper and carbon,

to 2300 C. t Y

3, The process of claim '1 characterized by the fact that fluxes are added to the reaction mixture during cooling when the mixture is at a temperature of from about 1100 C(to 1800 C. and preferaloly from 1450 C. to 1550 C.

i. The process of claim 1 characterized by the fact that a flux is added to the reaction mixture during cooling when the mixture is at a temperature'of from about1100 O2 to 1 800 C. an'crpreferably from 1450 C, to 1550 0., saiclxflux being chosen from the class consisting of halogen compounds of the alkali 'metals and of the alkali earth metals.

GRUBER, 

